Dioon spinulosum 
MEXICAN CYCADS 
The following three species 
will endure temperatures slightly 
below 32° F. Unlike palms and 
ferns, cycads produce an entire 
crown of fronds at one time. 
These fronds remain in. fine con- 
dition for many years. 
884. CERATOZAMIA MEXI- 
CANA. From the barrancas of 
the State of Vera Cruz. 
886. DIOON EDULE. Narrow, 
bluish-green, close-set leaflets. 
Slow growing. From the desert 
areas of Mexico. Will grow three 
times as fast and often produce 
side growths, when planted in 
the ground (with good drainage, 
as all cycads demand). 
888. DIOON SPINULOSUM. The 
rain-forest relative of the last. 
Flat, broader, bright green leaf- 
lets. A shade lover. This plant is 
one of the great beauties of the 
family. 
Ceratozomia Mexicana 
